為了保障適配器的工作安全，電源適配器廠家需要在電路設計上實現最優化效果，并保障線路系統能夠長時間高效安全運轉。因此，壓敏電阻器作為一種能夠對電路實現電壓抑制保護的元件，便在日常設計過程中得到了充分的運用。

對電(dian)(dian)源適配(pei)器(qi)(qi)廠(chang)家(jia)這(zhe)種專門從事電(dian)(dian)源設計生產的企業來說，壓敏(min)(min)電(dian)(dian)阻器(qi)(qi)是一(yi)(yi)個比較熟(shu)悉的名詞(ci)了。這(zhe)款電(dian)(dian)阻器(qi)(qi)是工作中(zhong)比較常用的一(yi)(yi)種電(dian)(dian)子元(yuan)器(qi)(qi)件，它具有瞬態電(dian)(dian)壓抑制功能，在(zai)設計中(zhong)一(yi)(yi)般會被用于(yu)適配(pei)器(qi)(qi)的電(dian)(dian)路(lu)浪(lang)涌和瞬變防護電(dian)(dian)路(lu)方面。在(zai)正常工作的情況下，壓敏(min)(min)電(dian)(dian)阻器(qi)(qi)能夠對集(ji)成(cheng)電(dian)(dian)路(lu)等重要元(yuan)件以及(ji)其他電(dian)(dian)路(lu)和設備進行保護，防止因靜電(dian)(dian)放電(dian)(dian)、浪(lang)涌及(ji)其他瞬態電(dian)(dian)流-如夏季雷(lei)擊、雷(lei)暴等，而造(zao)成對(dui)它(ta)們的損(sun)壞。

在適(shi)配(pei)器(qi)(qi)(qi)的(de)電(dian)路(lu)(lu)(lu)設計過(guo)程中，一(yi)般情況下電(dian)源適(shi)配(pei)器(qi)(qi)(qi)生產廠家是可以直(zhi)接將(jiang)(jiang)壓(ya)敏電(dian)阻器(qi)(qi)(qi)并接于(yu)被保(bao)護的(de)電(dian)路(lu)(lu)(lu)上的(de)。在完成并接后，當電(dian)路(lu)(lu)(lu)系統(tong)的(de)電(dian)壓(ya)瞬間(jian)(jian)高(gao)于(yu)限定數值(zhi)(zhi)時(shi)，電(dian)阻器(qi)(qi)(qi)阻值(zhi)(zhi)將(jiang)(jiang)會迅(xun)速(su)下降，快速(su)導通大電(dian)流，阻止瞬間(jian)(jian)過(guo)壓(ya)而(er)起到(dao)保(bao)護作用。當輸入電(dian)壓(ya)低于(yu)電(dian)阻器(qi)(qi)(qi)的(de)工作電(dian)壓(ya)時(shi)，壓(ya)敏電(dian)阻器(qi)(qi)(qi)阻值(zhi)(zhi)極高(gao)，近乎(hu)開路(lu)(lu)(lu)，所以不會影響器(qi)(qi)(qi)件或電(dian)氣設備的(de)正(zheng)常工作。

接入了(le)壓(ya)敏電(dian)(dian)(dian)阻器(qi)的電(dian)(dian)(dian)源適配(pei)器(qi)，其(qi)工作(zuo)過(guo)(guo)程中所產生的火華電(dian)(dian)(dian)路(lu)和沖擊電(dian)(dian)(dian)流(liu)將會被有(you)效的抵消。在供電(dian)(dian)(dian)網絡疊加有(you)過(guo)(guo)電(dian)(dian)(dian)壓(ya)脈沖時(shi)(shi)，接壓(ya)敏電(dian)(dian)(dian)阻后，過(guo)(guo)電(dian)(dian)(dian)壓(ya)峰值波(bo)形削平(ping)，限制(zhi)在一(yi)定的幅度內。在供電(dian)(dian)(dian)網絡疊加有(you)過(guo)(guo)電(dian)(dian)(dian)壓(ya)脈沖時(shi)(shi)，接壓(ya)敏電(dian)(dian)(dian)阻后，過(guo)(guo)電(dian)(dian)(dian)壓(ya)峰值波(bo)形削平(ping)，限制(zhi)在一(yi)定的幅度內。在開啟或關閉帶有(you)感性、容性的負載電(dian)(dian)(dian)路(lu)時(shi)(shi)，直流(liu)波(bo)形出現開關尖脈沖，壓(ya)敏電(dian)(dian)(dian)阻在電(dian)(dian)(dian)路(lu)中能吸(xi)收這種反電(dian)(dian)(dian)功(gong)勢，從(cong)而有(you)效的保護(hu)開關電(dian)(dian)(dian)路(lu)不(bu)受損害。

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